Is a beginningless model of spacetime true?

Introduction

Clarifying the question

On some models, spacetime has no beginning. This is usually either because it extends infinitely into the past or because time deconstructed in some sense. Is one of these models which lack a beginning true?

“Yes, after all…

Is the Aguirre-Gratton reversed arrow-of-time model true?

The Aguirre-Gratton reversed arrow-of-time model is true. This is relevant because the model lacks a beginning.
Is the Carroll-Chen reversed arrow-of-time to AsDs model true?
The Carroll-Chen reversed arrow-of-time model is true. [See full article.] This is relevant because the model lacks a beginning.
By way of response:
- It implies you're a Matrix brain that just formed.
- It requires a highly improbable bounce stage.
- It destroys probabilistic reasoning

Clarifying the question